What do we use to excrete urine?
The excretory system
The respiratory system
The sweat glands
What does the excretory systems consists of?
The urinary tract
The large intestine
Which organ filter the blood?
Which organ collects the urine until it is expelled?
Kidneys extract waste product
The clean blood returns to the body through the renal veins
When the bladder is full, we feel the need to urinate
Sweat is a similar liquid to ...